Nec B58944 - Datasheet 2021 __link__
Given its role in SOP-28 packaging as a driver IC, ensure adequate heat dissipation through PCB copper pours, as ECU environments are subject to high thermal stress.
Finding historical documentation for legacy automotive ICs can be difficult. Authentic copies of the document can typically be navigated via global aggregate databases such as AllDatasheet or dedicated surplus inventory systems like Worldway Electronics .
Use a component tester (e.g., Atlas DCA55 or GM328A). A genuine NEC B58944 will show:
Modern legacy support handled under Renesas Electronics product lines following their corporate merger with NEC. Diagnostics, Failure Modes, and Repair
Suitable for loads up to 2.2A, with Roncap R sub o n end-sub less than 0.5 Ω and a clamping voltage of 45V. nec b58944 datasheet 2021
Because this IC is an OEM proprietary-masked part, tracking its datasheet parameters requires looking at its cross-referenced semiconductor siblings:
Parts are available from specialists like Jotrin Electronics or ECUfix . 5. Summary Table Specification Model NEC B58944 / Bosch B58944 Type Low-Side DMOS Switch Driver Package Common ECU Bosch ME7 / EDC16 Clamping Voltage Max Current
However, to help you identify the component and find the correct documentation, here is a
Disclaimer: The information in this article has been compiled from various publicly available sources. While efforts have been made to ensure accuracy, the complex and sometimes conflicting information about this component means that some details should be independently verified with a manufacturer or official documentation. Given its role in SOP-28 packaging as a
The is a specialized 256Kb SRAM chip , essential to the operation of Bosch Engine Control Units in many European and Japanese vehicles. While an official public datasheet is not available, technicians and engineers rely on the part number cross-references and application notes compiled in this guide for repair and replacement. By understanding its role and sourcing from reputable suppliers, you can ensure the integrity of your ECU-related repairs.
In 2021, the primary demand for the B58944 came from the automotive repair sector, specifically for technicians rebuilding ECU Bosch systems. The IC is crucial for controlling solenoids, injectors, and other actuators that require precise, reliable power management. Primary ECU Compatibility The B58944 is commonly found in: (Honda, Fiat, PSA Group) Bosch ME7.5 & ME7.5.10 Bosch ME7.9.6 & ME7.9.20 Bosch EDC7 (Heavy-duty vehicles)
In automotive repair shops, the NEC B58944 is frequently flagged as an "easily damaged part". Because it interfaces directly with external vehicle components, it bears the brunt of external wiring anomalies. Typical Symptoms of a Blown B58944
Do not assume B58944 is the actual datasheet part number. Post a clear photo of the component marking. Step 2: Search Renesas application notes for “B58944”. Step 3: Contact Renesas support with the full marking and device photo. Use a component tester (e
Finding a single "2021" specific datasheet is rare for this part, as it is an older, specialized automotive component. Technical parameters and inventory details can be requested directly from electronic component suppliers like Jotrin Electronics or ECU Fix Tool .
Given its application in critical vehicle systems, sourcing a genuine NEC B58944 is vital for a successful repair. Here are the best avenues to explore.
Since an official version was never released (NEC's semiconductor division was transferred to Renesas in 2010, and most legacy datasheets were archived by 2015), the following parameters are aggregated from: